<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<script>
  "use strict";
  console.log("a\nb");
  console.log(" \u4e2d ");//中
  console.log("  \x41  ");//A

  //tab 上面 esc下面
  let msg1 =
          `hello
             world
             你好呀
             nihao `

  //tab 上面 esc下面
  let name = 'Tom';
  let age = 3;
  let msg2 = `你好，${name},${age}`
</script>

</body>
</html>